Mr. Lee, who as a guide for over 10 years, is now a manager in a big trav
题型：不详难度：来源：
Mr. Lee, who as a guide for over 10 years, is now a manager in a big travel agency.| A．worked | B．has worked | C．had worked | D．works |
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答案
| A |
解析
| 考查时态。本题一定要注意B选项，现在完成时表示过去所发生的事情对现在的影响，而本题只是陈述过去曾经发生过这样的事情，没有反映出对现在的影响。句意：在过去10年中做导游的李先生，现在是一家旅行社的经理。 |
举一反三
The scientist __________ the experiment for half a year, but he _______ yet.| A．made; didn’t succeed | B．made; hasn’t succeeded | | C．was making; didn’t succeed | D．has been making; hasn’t succeeded |
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It’s high time that we _____ measures to stop selling polluted vegetables. | A．must take | B．take | C．took | D．will take |
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Social attention should be paid our earth from . | A． to prevent; being polluted | B． to preventing; polluted | | C． to prevent; polluting | D． to preventing; being polluted |
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When and where to build the new factory ___ ________ yet.| A．is not decided | B．are not decided | | C．has not decided | D．have not decided |
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According to the statistics, although more books ________ in recent years, Chinese people spend ________ time in reading.| A．have been come out; little | B．have come out; less | | C．have come out; little | D．have been come out; less |
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